Nut-lock.



J. SANTARCANGELO.

NUT LOCK.

APPLICATION FILED SEPT.6, 1911. RENEWED NOV. 22, 1913.

m Patented Mar. 3, 1914.

INVENTOR r]: csanizzrczzn geb ATTORNEYS ym KM ANGELO, a citizen of the Improvements in Nut-Locks, of which the lng device that is more durable,'capable of detached nut,

' screw threaded, as at 3.

UNITED STATES PATENT OFFICE.

Patented Mar. 3, 1914.

Specification of Letters Patent.

1,089,159. Application filed September 6, 1911, Serial No. 647,815. Renewed November 22, 1913.

To all whom it may concern Be it known that I, JOSEPH SANTARC' United States of merica, residing at Pittsburgh, in the th county of Allegheny and State of Pennsylvania, have invented certain new and useful videdtherefor in pieces of material 8 and 9, e head 2 of the bolt engaging the piece of the nut 6 the piece of mate r1al8.

The nut 6 has its outer face thereof profollowing 1s a specification, reference being vided with two diametrically opposed transhad therein to the accompanying drawing. versely extending inclined cut away p01 tlons Thls inventlon relates to nut locks and I 10 to orm a pair of'grooves which extend more partlcularly to an improvement upon I from the outer edge to t 1e inner edge of the my application for patent Serial N 0. 644,751, filed August 18th, 1911. I

t e inner end of one of the walls of a. groove.

Besides having the same objects in view he inner walls of said slits extend in paras disclosed in my pending application, the present invention aims to provide a nut lockall Y in various positions, and efficient as a device that can be advantageously through the threaded wall of the bolt opening. In this manner the arms 11 have outer nuts. free ends and the opposite ends thereof inte- The invention further aims to furnish a gral with the nut, whereby a hammer or nut with double locking elements either of other instrument can be employed for tapping the free ends of the arms and driving he same inwardly to engage in diametrically opposed grooves 4 of the bolt 1. free ends of the arms 11 are adapted to engage the shoulders 5 of the bolt and prevent a rearward rotation of the nut upon the bolt. In practice, the nut 6 screwed upon the bolt until the threaded bore thereof obtains a purchase upon the threads of the bolt that which can be shifted to engage a bolt to prevent the rearward rotation of the nut upon the bolt.

I attain the above objects by a mechanical in like numerals denote corresponding parts throughout the several views, in which:

Figure 1 is a side elevation of the nut lock, Fig. 2 is a longitudinal sectional view of the same, Fig. 3 is a front elevation of a Fig. 4 is an end view of the minlmum.

Serial N 0. 802,585.

1ndicated by dotted nut lock showing the nut in a locked posistripped reduced to a tion, and Fig. 5 is a perspective view of a In the manufacture of the nut 6, I find it detached nut. advantageous to provide the outer face thereof The reference numeral 1 denotes'a bolt or saw or otherwise cut the nut on a line that tie rod having one-end thereof provided with a head 2 and the opposite end thereof end 3 is provided with equally spaced longito the longitudinal axis ofthe bolt. e grooves 4 are approximately half the lengthof the threaded portion of the bolt 1, to enable the threaded portion of the nut 6 when screwed upon the bolt to obtain a purchase upon that part of the threaded portion 3 of the bolt which is not provided with the engage in the grooves 4 of the bolt.

That- I claim is In a nut lock, the

combination with a bolt portion thereof formed h a series of equally spaced longitudinal grooves of less length than said threaded with a transverse slot 14 and then portion and having their outer termini at -width toward their free ends, said tongues the outer terminus of the bolt, a nut having adapted to have their free ends driven into its outer face provided with a transverse rediametrically opposed grooves for securing cess and further having diametrically opthe nuts against unlocking movements.

5 posed pairs of facets slitted inwardly and In testimony whereof I afiix my signature 15 with the slits extending through the walls of in the presence of two Witnesses.

' said recess at opposite ends thereof thereby JOSEPH SANTARCANGELO.

providing oppositely disposed tongues ex- Witnesses: tending toward the other ends of the walls MAX H. Snonovrrz,

10 of the recess, said tongues decreasing in CHRISTINA T. Hoon. 

